Solar keyboard system



FIG. 1 is a perspective view of a solar keyboard system showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view;

FIG. 5 is a rear elevational view;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a right side elevational view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a solar keyboard system, as shown and described. 